prentiss



W. A. PRENTISS.

SPOOL.

APPLICATION FILED APR.30. 1919.

1,316,972. PatentedSept. 23, 1919.

2 SHEETS-SHEET I.

WITNESS: INVEN TOR.

A TTORNE Y.

W. A. PRENTISS;

SPOOL.

APPLICATION FILED APR.30, 1919.

1,316,972. I Patented Sept. 23, 1919.

2 SHEETS-SHEET 2.

IN V EN TOR, Wdazn a7. flanking,

ATTORNEY.

UNITED STATES PATENT OFFICE.

WILLIAM A. PRENTISS, OF HOLYOKE, MASSACHUSETTS, ASSIGNOB '10 GEORGE W. PRENTISS & COMPANY, OF HOLYOKE, MASSACHUSETTS.

SPOOL.

Specification of Letters Patent. Patented Sept. 23, 1919.

#Applicationtled April so, 1919. Serial No. 288,881.

To allwhom it may concern:

Be it known that I, WILLIAM A. PRENTISS, a citizen of the United States of America, residing at Holyoke, in the county of Hampden and Con'niionwealth of. Massachusetts, have invented certain new and useful-Improvements in Spools, of which thefollowin is a specification.

This invention relates to improvements in spools for receiving coils of wire which are to be used in machines for stitching together articles with wire as in stapling machines. The invention, broadly, comprisesa spool having a fixed and a removable head, or end pieces that are connected together b means of a hub and core element. The hu is preferably made tapering to permit easy insertion and removal of a coil of wire. The removable head is provided with means for quickly and securely attaching and detach{ ing the same to and from the hub and clamping it in place when in use. -An object of the invention is to rovide a spool in which the removable head is so formed that the clamping means for the same is located below the plane of the outer surface of the head, whereby the frictional means which is employed to prevent the wire from being drawn oil too rapidly, or, for preventing the spool from running away, which means is usually a device that presses against the outer ends of the spool and will not obstruct the rotation of the spool during the unwinding operation. The invention includes, in addition to the'hub, a core-men ber or sleeve having an opening extending therethrough toreceive the supporting pin on which the spool turns, one end of which projects beyond the end of the hub, said sleeve having mutilated or partially formed teeth or grooves, and the detachable head having a plate secured thereto with projections that enter the teeth or grooves of the iron sleeve and locking means carried by the detachable head for clamping the same to the sleeve, the lock in one form of my invention being preferably located -on' the outer face of the removable head, and its normal or looking position being below the plane of the outer surface of the detachable head.

Referring to the drawings:

Figure 1 is an end view 'of the detachable 1 head showing a thumb-lock and the metal plate secured thereto and having projections hub.

modification; Fig. 12 being a sectional view on the line 12-12 of Fig. 11; Fig. 13 being which enter the the iron sleeve.

Fig. 2 is a vertical sectional view on the plane represented b the line 2-2 of Fig. 1, passing through-t e axis of the spool and illustrating the tapered hub, the iron sleeve and the manner of securing the detachable grooves that are formed in head to the sleeve.

Fi 3 is a detail view of the locking plate whic is secured to the inner surface of the detachable head and showing the inwardly pro ecting lugs and the thumb lock.

Fig. 4 is a detail sectional view on the line -l4; of Fig. 3 showing the tapered construction of one of the locking lugs on the plate. Fig. 5 is a detail perspective view of the end of the hub showing the groove or kerf therein for receiving the inner end of a coil of ribbon wire, also the iron sleeve formed with the tapered spiral grooves for locking the remova le head in place. Fig. 6 is a detail perspective view of the plate which is secured to the inner surface of tlie'reinovable head and illustrating the lugs which engage the spiral groovesof the iron sleeve.

Fi 7 shows a slight modification in which the clamping or thumb iece is so located on the removable head t iat when the removable head of the spool is rotated to bring the same against the end of the hub the clamping thumb piece will enter one of the cut-away portions of the sleeve of the spool. v Figs. 8, 9 and 10 are further modifications in which an eccentrically arranged plate is provided to lock the head to the sleeve and having suitable means for normally retaining the plate in frictional engagement with the sleeve; Fig. 9 being a sectional vieivi on the line 9-9 of Fig. 8, and Fig. 10 being a sect onal view of Fi 9 on the line 10-10.

Figs. 11, 12, 13 an 14 are further modifications in which a nut is rotated by the head when the same is turned on the sleeve for drawin the head toward the end of the iese figures show the details of this a sectional view on the line 1313 of Fig. 11; and Fig. 14 being a sectional view on the line 14-44 of Fig. 13.

Referring to the drawings in detail: 1

designates the tapered hub, 2 the iron sleeve llO passing therethrough and which receives the supporting pin of the machine about which the spool revolves when the Wire is unwound from the spool. The fixed head is indicated at 3 and the removable head at 4. The head 3 is secured to the hub 1 in any suitable manner. The iron sleeve 2 is secured to the i hub 1 by a driving fit. Referring to Figs.

Referring now to the construction of the removable head 4, this part of the device is formed with an annular recessed portion 10 (see Fig. 2). On the inner face thereof and located in this recess is an iron plate 11, a detail of which is shown in Figs. 3 and 6. This plate is attached to the hea-d4 by means of screws passing through the openings 12 and is formed with an axially arranged opening therethrough, indicated at 13, which is slightly larger thanthe diameter of the iron sleeve 2. The border of the opening 13 of the plate 11 is formed with the inwardly extending projections 14 and 15, which projections enter the cut-away portions'6 and 7 of the sleeve 2 and then pass into the curved or spirally arranged recesses 8 and 9 when the head is turned slightly so that these projections will pass to the inner ends of the spirally curved grooves 8 and 9. As these grooves are tapered, the head 4 is automatically drawn inward against the end of the hub 1. In order to lock the head in this position on the iron sleeve '2, a thumb construction is provided which is clearly shown in Fig. 3 and comprises the ears 16 and 17. Located between these ears is a thumb or lever piece 18 and that is pivotally connected to the ears by means of a pin N -which is position, causing the eccentric surface 20 to engage the outer surface of the iron sleeve 2 and then lock the head 4 securely to the sleeve, as is readilyunderstood. It will be noticed that the piece 18 is located in a re- 'cess 21 of the removable head 4 whereby the same is located below the plane of the outer surface 22 of the removable head For the purpose of securing the coil of w1re to "the core 1, the groove 23 is cut in the hub,

shown in Fig. 5, when the wire is a ribbon structure, and, if the wire is circular, the

inner end of the coil is passed through the opening 24 of the fixedhead 3.

It will be seen from this description that I have provided a spool for receiving coils Referring to Fig. 7, it will be noticedthat the thumb lock or piece 18 instead of engaging the curved portion of the-sleeve 2 as in Fig. 3, is so located on the end piece "4 as to enter-one ofthe cut away portions 6 or 7 of the sleeve 2. This arrangement effectually prevents all danger of the head 4 Working loose. Referring to Figs. 8, 9 and 10, 25 designates an, eccentric plate that is pivotally secured to the iron plate 11, by means of the screw 26 and is located in a recess 25 of the head piece 4. The plate 25 carries a pin 27 against which one end of the coiled spring 28 bears. This spring passes around the screw 29 that is attached to the plate 11.

The other end of the spring bears against the stop 30, on the plate 11. The normal tendencyof this spring is to turn the plate 25 on its pivot 26 so as to bring its eccen-- .tric ed e 25- a ainstthe outer curved surface of the sleeve 2. In order to release the grip of the eccentric plate 25 from the sleeve 2 and remove the head 4, the operator turns the plate 25 by means of the pin 27, which releases the frictional grip of the plate 25 on the sleeve 2, whereby thehe'ad 4 can be rotated so that it is released from the spiral grooves 8 .and can be removed axlally. When the head is replaced, the reverse operation will take place. It is inserted on the core 2 and the projections 14 and 15 enter the'threads 8 and upon the rotation of the plate it is moved toward the end of ,the hub 1. The operator then releases the eccentricplate 25, whereby the spring 30 moves the same into grlpping relation. with the core 2.

Referring to the modifications shown in Figs. 11,12, 13 and 14 the sleeve 2 is formed with threads 31 near itsouter end. 32 is a collar which forms an integral part of the" sleeve 2. 33 is a nut that engages the threads 31 of the sleeve 2. This nut is formed with a shoulder 34 which engages the collar 32 to prevent its removal. from the sleeve. The inner end of the nut 33 iscut awa on its opposite sides, as indicated at 35 to orm the shoulders 36 and 37 at the opposite ends of the cut away part. The plate 11 is formed with the oppositely disposed lugs 38 which engage the shoulders '36 and 37 in order to turn the nut on the sleeve 2 when the removable head 4 is rotated for the purpose of drawing or moving the same against the order to place the removabl head 4 is rotated,

end of the hub 1 as shown in Fi 13. In

e hear?! on the core 2 after a coil of wire has been placed on the hub 1, the nut 33 is formed with the oppositely disposed parallel arranged grooves 39 and 40 through which the lugs 38 pass. These (grooves and lugs are shownv 12 before the removable and in Fig 13 "after the head has been rotated to draw the head against the end of the hub 1. It will be seen from the construction shown in these figures that the head 4 'may be readily placed on and locked to the sleeve 2 by simply passing the lugs 38 through'the rooves 39 and 40, then rotating the head w ich will cause the in Figs. 11 an lugs 38 to engage a shoulder at the end of the cut away part 35, whereby the nut 33 will be turned on the threaded part 31 of the sleeve until the head 4 is carried against the end of the hub 1.

'From this description it will be seen that I have provided different forms of constructions for quickly removing and securing the removable head of a wire holding spool in place, and one that will not interfere with the frictional or brake construction.

What I claim is:

1. A spool device for wire, in combination, a hub, of a fixed and a removable head, a sleeve in the hub and projecting beyond one end of the hub, means or securing the removable head to the sleeve holding a coil of v comprising a plate on the removable head,

a lock e ,erating device on the plate and means for locating the locking device in the removable head below the lane of the outer face of the removable head 2. In a s 001 for holding a coil of wire, a hub, a s eeve in the hub and having a grooved cut-away portion, a removable head, a plate thereon having projections for I V entering said grooved cut-away portions for drawing the head against the end of the hub as the head is revolved, and means for locking the head in this position on the sleeve and against the end of the hub.

3. spool for holding a coil of wire while being unwound, and comprising, in combination, a hub, a head secured thereto, a sleeve in the hub, and projecting from one end of the-hub, a removable head, and means inwhereby said surface is free from obstruc-. tion during the unwind ng operation ofthe' coil. 7

4. A spool for holding a coil of wire while being unwound, a hub on which the coil is placed, a head fixed to the hub, a sleeve in the hub and having a grooved projecting end, said groove being spiral in form, means for temporarily securing the head to the pro ecting end, said means including a plate having projections or lugs for enter-in the grooved part of the sleeve, and a lodldng device having an eccentric or cam surface for engaging the projecting end of the sleeve.

5. In a spool for holding a coil of wire while being unwound, a hub, a sleeve extending through the hub and having an end that is formed with a cut-away portion, the inner end of the cut away portion having a spirally formed groove, a removable head designed for attachment to the sleeve, a plate on the head having an opening through the same and lugs in the opening for engaging the spirally formed grooves of the sleeve, and means normally below the plane of the outer surface of the removable head for locking the same to the sleeve.

6. A spool for supporting wire while being unwound and com rising a fixed and a removable head, a 1111 a sleeve in the hub, the removable head having a recess below its outer end surface, a locking device for securing the head to the sleeve, the operative part of the locking device being located in the recess, for the purpose described.

7 A spool construction having, in combination, a hub, a sleeve therein and projecting beyond the hub, a removable head, means for locking the head to the sleeve and comprising a nut engaging the projecting end of the sleeve, the nut having shoulders, a plate on the head and formed with an opening, having projections on the border of the openings toengage the shoulders of the nut for operating the nut when the head is turned for moving the head against the end of the hub.

- WILLIAM A. PRENTISS.

1,316,9{723-1William Prmqlss, Holyoke, Mas. SPOOL;

23, 1919. Disclaimer fild February Q, 1921 by th patentee.,

Enters this disclaimr To that part of the blaims in said pecification which felates to and. inludes the latch 18 and the parts which c-otiperate tjhei'evith a'nd desighat aed by tH referpce 'humerals, 2, 6, 7,8,9, 14, 15 ,-16,an( 1 17, in Figs. 1,2,3,4, 5, a, 7, and 8,1'espctiv fly,

of the pecification bf said patent.

o ciaz'eaea Febmary 22,1921

Pate lit daited September 

